Display screen having a graphical user interface or portion thereof



A portion of the disclosure of this patent document contains material to which a claim for copyright is made. The copyright owner(s) have no objection to the facsimile reproduction by anyone of the patent document or the patent disclosure, as it appears in the Patent and Trademark Office patent file or records, but reserve all other copyright rights whatsoever.

The FIGURE is a front view of a display screen having a graphical user interface or portion thereof.

The electronic device shown in broken lines illustrates environmental subject matter, whereas the broken lines showing a display screen and elements of the graphical user interface illustrate portions of the article. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a display screen having a graphical user interface or portion thereof, as shown and described. 